WHAT AM I LISTENING FOR?

If you wanted to know what ports
your server is has open and listening
for connections to be made. Use:

$ netsat -a | grep LISTEN

tcp 0 0 *:ssh *:* LISTEN
tcp 0 0 *:smtp *:* LISTEN

NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.